Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Find the missing number in the sequence below:

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

You can see three almost identical images below. Can you spot the odd one out from them?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?